Deck 1

Question 1

What does a Terraform backend do?

Answer 1

Gives Terraform somewhere to store the state file

Question 2

What are Terraform’s main supported backends?

Answer 2

Local
[Generic] Remote
S3
Artifactory
Consul
Kubernetes

Question 3

What is the command to get the Terraform console open?

Answer 3

terraform console

Question 4

How do you enable Terraform debugging?

Answer 4

Set the environment variable TF_DEBUG to one of Trace, Debug, Info, Warn or Error.

Question 5

Which debug level is the most verbose?

Answer 5

Trace

Question 6

What is a Terraform install that doesn’t have internet access generally known as?

Answer 6

Air gapped

Question 7

What does the index function do?

Answer 7

Give you the position number for a value in a list

Question 8

How would you find the index of “B” in a list “A, B, C”?

Answer 8

index([“a”, “b”, “c”], “b”)

Question 9

What does the lookup function do?

Answer 9

Find the value for a given key, or return a default value if it can’t be found.

Question 10

How do you set a variable from the CLI, using an environment variable?

Answer 10

Export the variable with TF_VAR_ in front of it

Question 11

When does Terraform’s Vault provider go and get its information from vault?

Answer 11

When Terraform Plan is run

Question 12

How can you access the output of one module from another?

Answer 12

Add an output from the first module, and retrieve the output in the second module.

Question 13

How do you remove the lock on a state for your current configuration?

Answer 13

terraform force-unlock

Question 14

Where are plugins stored by default?

Answer 14

.terraform/providers, in the current working directory

Question 15

What are the general variable types?

Answer 15

String
Number
Boolean

Question 16

What are the complex variable types?

Answer 16

Lists/tuples

Maps/objects

Question 17

What’s the format of a list variable, and what can it be used for?

Answer 17

list = [“a”, “b”, 15, true]

Note the quotes for string value types, but not boolean values

Question 18

What’s the format of a map variable?

Answer 18

Curly braces with a series of key:value pairs

{
name = “John”
age = 52
}

Question 19

When do variables need quotes, and which type?

Answer 19

Variables need double quotes when they are written strings.

Numbers, computed or referenced variables, or boolean values don’t need to be quoted.

Question 20

Is Terraform mutable or immutable? Why?

Answer 20

Mutable, because its objects can be changed after being created

Question 21

What OSes can Terraform run on?

Answer 21

Solaris
FreeBSD
macOS
Linux
Windows